// Copyright (C) 2020 Alexey Shvayka. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- esid: sec-assignment-operators-runtime-semantics-evaluation description: > ToBoolean returns `false` for [[IsHTMLDDA]] object; rval is not evaluated. info: | AssignmentExpression : LeftHandSideExpression &&= AssignmentExpression 1. Let lref be the result of evaluating LeftHandSideExpression. 2. Let lval be ? GetValue(lref). 3. Let lbool be ! ToBoolean(lval). 4. If lbool is false, return lval. The [[IsHTMLDDA]] Internal Slot / Changes to ToBoolean 1. If argument has an [[IsHTMLDDA]] internal slot, return false. 2. Return true. features: [IsHTMLDDA, logical-assignment-operators] ---*/ var IsHTMLDDA = $262.IsHTMLDDA; var value = IsHTMLDDA; assert.sameValue(value &&= unresolved, IsHTMLDDA); assert.sameValue(value, IsHTMLDDA); reportCompare(0, 0);